Automatically-threading shuttle



April 20 1926.

H. LUSSIER AUTOMATICALLY THREADING SHUTTLE Filed Dec. 11, 1925 ATTORNEYPatented Apr. 20, 1926.

UNITED STATEfi Parent oFFic HENRY LUSSIER, F SALEM,MASSACHUSETTS,'ASSIGNQR TODRAPER oonronArIoN,

MASSACHUSETTS, A oonronn'rion on MAINE.

AU'roMArIoALLY-THnEADIne SHUTTLE.

Application filed December 11 1925. Serial No. 74,828.

To all whom it may concern:

Be it known that I, HENRY LUSSIER, a

1,483,492, February 12, 1924, there was shown, described and broadlyclaimed an automatically threading shuttle having a thread passageextending longitudinally thereof andv provided with a thread castingdevice which functioned to cast or throw the thread upwardly on theformation of a loop or overthrow. In a later, patent granted to EdwardS. Stimpson, No. 1,5382%, May 19, 1925,.a further development of theprior patented structure was shown, described and claimed. Shuttles ofthis type which may be termed thread casting shut-' tles have gone intoextensive use, and the present invention is more particularly directedto the general type 'of shuttles shown in the later 'Stiinpson Patent,No. 1,538,224, wherein the threading block had inclined portionsextending upwardly and frontwardly from the bobbin chamber, and withinthe thread passage constituted by the side walls of the block there waslocated a thread casting device formed as a scroll.

The present invention is more particularly directed to means forprotecting the thread casting device from injury or distortion bycontact with the bobbin or other device during use, and constitutes aguard for the thread casting device which, as shown in the presentinstance of the invention, extends above and protects the thread castingdevice.

In accordance with the present invention, the thread casting deviceextends into the thread passage wholly below the guard, which isconstituted, in the present instance, by the side walls of the threadingblock.

In the patent to Edward S. Stimpson, No,

The invention and new combination of parts will best be made clear fromthe following description and the accompanying drawings of one good formthereof.

In the drawings:

Fig.1 is a perspective view of the thread ing end of a shuttle entinvention;

Fig. 2 is a plan view thereof;

Fig. 3 is. an enlarged perspective view with parts of the shuttle bodybroken away to show the threading block and its asso-.

ciated thread casting device; and

Fig. 4: is a longitudinal sectionof the threading block.

Theshuttle l is provided with the usual provided with the presbobbinchamber 2 in which .the bobbin 3 is'mounted. The means for holding thebobbin in the bobbin chamber is not herein shown because it formsnoessential part of the present lnvention.

Frontward of the bobbin chamber 2 the shuttle body, is provided with athreading block receivingchamber 4 and at the forward portion of suchchamber the shuttle is provided with aside delivery eye 5 from which theweft or filling thread a is de livered from the bobbin during weaving.

The threading block in accordance with the present invention is formedwith a base portion 6 and side walls 7 and 8 between which is thelongitudinally extending thread passage 9, and one of the side walls ofthe threading block, such as 7 in the present instance, is provided witha thread director 10 at its forward portion which extends in atransverse direction relative to the longitudinally extending threadpassage.

The side walls 7 and 8 of the threading block are inclined upwardlyandfrontwardly from the bobbin chamber, as at 11 and 12, to facilitate theproper upward movement of the weft or filling thread when it is castfrom the thread passage on the occurrence of a loop or overthrow and topermit the proper ballooning of the thread on the first pick of theshuttle following replenishment. At its forward portion the base 6 ofthe threading block is provided with a bridge 13 over which the threaddraws during weaving, and from the bridge 13 the thread passesdownwardly under a horn 14, as indicated in Fig. 1, on its way to theside delivery eye.

The parts so far described are substantially like those shown anddescribed in the Stimpson Patent, No. 1,538,224, with the exception thatthe threading block, in accordance with the present invention, isco-extensive with the threading block receiving chamber 4 so that therear edge portion 15 of the threading block extends to the bobbinchamber, and, as described in the Stimpson patent last mentioned, thethreading block may be secured in the threading block receiving chamberby the transverse bolt 16.

The thread casting device, in accordance with the present invention, ismounted in the longitudinally extending thread passage, and has a footportion 17 which underlies the base of the threading block, and, ifdesired, the thread casting device may be held in position by thetransverse bolt 16, as indicated in Fig. 4. The thread casting device asshown is constituted as a scroll 18 which extends upwardly, laterallyand frontwardly from a point adjacent the bobbin chamber, the rear edgeportion thereof being formed to cast the thread on the occurrence of aloop or overthrow.

To protect the thread casting device from injurious contact by the endof the bobbin during transfer or from injury by other means, the threadcasting device is located wholly below the side walls of the threadingblock. The rear edge portion 19 of the thread casting device extendsupwardly and frontwardly from the bobbin chamber below the adjacentinclined side walls 11, and then turns laterally at 20 and frontwardlyat 21, both of said edge portions of the thread casting device or scrollbeing disposed in the thread passage wholly below and protected by theguard or protecting portions of the threading block. The forward endportion of the scroll 18, as at 22, terminates rearwardly of the bridge13, but the entire scroll is protected from injurious contact by theincoming bobbin or other means by the upward and inclined side walls ofthe threading block which extend above the thread casting device orscroll. In other words, the present invention contemplates the provisionof a guard for the thread casting device or scroll which in the presentinstance is constituted by the upwardly inclined side walls of thethreading block, the construction being such that should the tip end ofthe bobbin be projected forwardly or downwardly, it will be engaged bythe side walls of the threading block which thus act as a guard toprotect the thread casting device or scroll from injurious contact. Itmay sometimes happen that the shuttle will not be properly boxed ontransfer, or the bobbin itself may be projected forwardly by the usualinclined guide at the bobbin holding end of the shuttle, in which casethe guard portion of the threading block constituted as heretoforedescribed, will protect the thread casting device or scroll and preventinjury thereto.

The upwardly and forwardly extending edge portion 19 of the threadcasting device or scroll extends from one side of the thread passage ina gentle upwardly and frontwardly inclined curve, as indicated in Figs.3 and 4-, the edge portion being wholly below the side walls of thethreading block.

Inasmuch as the threading block of the present invention is coextensivewith the threading block receiving chamber formed in the body, the upperinclined portion 11 of the side wall of the threading lo'lock mergesinto the horizontal portion 23, which is sufliciently high relative tothe thread casting device or scroll to protect the latter in conjunctionwith the similarly horizontal portion 24 of the opposite side wall ofthe threading block, the construction being such that should the tip endof the bobbin be projected downwardly from a point above the threadingblock, the tip portion of the bobbin will be arrested by the side wallsof the threading block, and injury to the thread casting device orscroll be thereby prevented.

What is claimed is: 1. In an automatically threading loom shuttle, thecombination of the shuttle body having a longitudinally extending threadpassage, a thread casting device in the longitudinally extending threadpassage to cast the thread therefrom on the occurrence of a loop oroverthrow, and a guard for protecting the thread casting deviceconstituted by the side walls ofthe longitudinally extending threadpassage which extend. in an upwardly inclined direction from the bobbinchamber above the thread casting device.

2. In an automatically threading loom shuttle, the combination of athreading block having a longitudinally extending thread passage adaptedto permit'the thread to be cast upwardly therefrom, a thread castingdevice in the longitudinally extending thread passage for casting thethread on the occurence of a loop or overthrow, and a guard forprotecting the thread casting device constituted by the side walls ofthe threading block inclined upwardly from the bobbin chamber above thethread casting device.

3. In an automatically threading loom shuttle, the combination of athreading block mounted in the shuttle body and. having its side wallinclined upwardly and forwardly from the bobbin chamber, and a threadcasting scroll in the thread passage having an upwardly, frontwardly andlaterally extending thread casting edge adjacent the bobbin chamberbelow and protected by the adjacent side wall of the threading blockconstituted IOU and arranged to cast the thread on the occurrence of aloop or overthrow as the shuttie is arrested in the shuttle box.

it. In an automatically threading loom shuttle, the combination of athreading block having side walls constituting an open thread passageand inclined upwardly and frontwardly from the bobbin chamber, a threadcasting scroll. in the thread passage wholly below and protected by theside walls of the threading block and having a thread casting portionextending upwardly and frontwardly from a point adjacent the bobbinchamber below the adjacent inclined side wall and then laterally of thethread passage to cast the thread upwardly on the occurrence of a loopor overthrow as the shuttle is arrested in the shuttle box.

5. In an automatically threading loom shuttle, the combination of athreading block having a longitudinally extending thread passage adaptedto permit the thread to be cast upwardly therefrom, a thread castingdevice in the thread passage having a thread casting portion extendingupwardly frontwardly and laterally from the lower portion of the threadpassage to cast the thread on the occurrence of a loop or overthrow, anda guard for the thread casting devlce constituted by portions whichextend frontwardly in an upwardly inclined direction from the bobbinchamber above the thread casting device.

' In testimony whereof, I have signed my name to this specification.

HENRY LUSSIER.

